Kabbala Denudata, The Kabbalah Unveiled

"The Qabalah may be defined as being the esoteric Jewish doctrine. It is called in Hebrew QBLH, Qabalah, which is derived from the root QBL, Qibel, meaning "to receive." This appellation refers to the custom of handing down the esoteric knowledge by oral transmission, and is nearly allied to "tradition.""